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(No Model.)

- F. 0. GERSTBNBERG.

PLUMBERS TRAP. No. 340,777. Patented Apr; 27, 1886.

I III,"IIIlIIIIIIIIIlIlIII/I I W) a ATTORNEYS.

N PETERS Pholomillmguphen Wasnmglon D. C.

UNITED STATES PATENT OFFICE.

FREDERICK C. GERSTENBERG, OF ASTORIA, NEW YORK.

PLUM BERS TRAP.

SPECIFICATION forming part of Letters Patent No. 340,777, dated April27, 1886.

Application filed February 2, 1886.

T0 aZZ whom it may concern:

Be it known that I, FREDERICK G. GERSTEN' BERG, of Astoria, in thecounty of Queens and State of New York, have invented certain new anduseful Improvements in Plumbers Traps, of which the following is a full,clear, and exact description.

The invention consists of the construction,

arrangement, and combination of parts, all asv hereinafter described andclaimed. Reference is to be had to the accompanying drawings, formingpart of this specification, in which similar letters of referenceindicate corresponding parts in all the figures.

Figure 1 is a side elevation of my new and improved plumbers trap, theside plate being removed. Fig. 2 shows an inside view of the side plate.Fig. 3 is a sectional plan view taken on theline rvwofFig. 1. Fig. 4isabroken plan view of the trap, and Fig. 5 is an en larged sectionalelevation of the weighted valve removed from the trap.

A represents the waste-pipe; B, the D-trap; O, the main outlet'pipe; D,the branch overflow-pipe, and E represents the valve for closing thelower end of the outlet-pipe G, which enters the trap B a shortdistance, as shown in Fig. 1. One side of the trap B is closed by a sideplate, B, which may be removed for clearing the trap or repairing thevalve. The upper part of the trap B, whereit connects with the wastepipe A, is on a higher level than the lower end of the outlet-pipe 0, sothe pipe 0 will always be water-sealed. The trap B is formed with theupper chamber, Bfil'or inclosing the valve E, and one side of thischamber B is formed or provided with the inwardly-projecting stud a,which is hollow to receive the pin b, on which the valve is pivoted.

The valve proper is composed of the plate 0, bent at right angles, andthe packing d, of leather or other soft material, secured upon the uppersurface of the lower portion, 0, of the plate a to form a tight jointwith the lower Serial No. 190,623. (I\"o model.)

end of the pipe 0 when the valve is closed. The upper portion, 0 of theplate 0 is conneeted to the lower member, f, thebell-crank f, throughthe angle of which the pivot-pin b passes. The memberf" of the saidbell-crank fis provided witha weight, f, which slightly overbalances thelower portion of the valve, so it will close the valve against the pipewhen there is little or no pressure of water in the pipe 0. XVhen thevalve is closed, any gas that may find its way through the waterretained in the D-trap B will be stopped by the valve and prevented fromentering pipe 0, and it there is any considerable pressure of gas itwill tend to close the valve more firmly against the pipe 0.

In order to form a gas-tight joint between the trap B and side plate, B,I form the for mer with a rabbet, c, to receive the plate, and I formthe plate with the inwardly-projecting lip e at one end, as shownclearly in Fig. 2. The lip e is for .the purpose of strengthening theplate B. This plate B is secured within the rabbet c by soldering orbrazing it to the part B.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

A plnmbers trap consisting of the D-trap B, open at one'side, formedwith a rabbet around theedge of its open-side, the recess B and the,projection a within said recessed part, the vertical pipe 0, extendinginto the trap at the recessed end B", the horizontal valve 0, theweighted bell-crank lever f, pivoted on the stud a, the outlet A,leading from the trap at a point above the lower end of the pipe 0, andthe cover-plate B, fitting within the rabbeted edges of the trap B,substantially as set forth.

FREDERICK O. GERSTENBERG.

WVitnesses:

H. A. WEs'r, EDGAR TATE.

